<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="./js/ctx.js"></script>
</head>
<body>
<div id="cesiumContainer">
</div>

<script>
    var initCesium = new InitCesium();
    var viewer = initCesium.initViewer('cesiumContainer',{
        shouldAnimate : true
    });

    var position = Cesium.Cartesian3.fromDegrees(-123.0744619, 44.0503706);
    var url = '../data/models/CesiumMan/Cesium_Man.glb';
    viewer.trackedEntity = viewer.entities.add({
        name : url,
        position : position,
        model : {
            uri : url
        }
    });

    var fragmentShaderSource =
            'uniform sampler2D colorTexture; \n' +
            'varying vec2 v_textureCoordinates; \n' +
            'const int KERNEL_WIDTH = 16; \n' +
            'void main(void) \n' +
            '{ \n' +
            '    vec2 step = 1.0 / czm_viewport.zw; \n' +
            '    vec2 integralPos = v_textureCoordinates - mod(v_textureCoordinates, 8.0 * step); \n' +
            '    vec3 averageValue = vec3(0.0); \n' +
            '    for (int i = 0; i < KERNEL_WIDTH; i++) \n' +
            '    { \n' +
            '        for (int j = 0; j < KERNEL_WIDTH; j++) \n' +
            '        { \n' +
            '            averageValue += texture2D(colorTexture, integralPos + step * vec2(i, j)).rgb; \n' +
            '        } \n' +
            '    } \n' +
            '    averageValue /= float(KERNEL_WIDTH * KERNEL_WIDTH); \n' +
            '    gl_FragColor = vec4(averageValue, 1.0); \n' +
            '} \n';
    viewer.scene.postProcessStages.add(new Cesium.PostProcessStage({
        fragmentShader : fragmentShaderSource
    }));

</script>
</body>
</html>